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<head>
    <meta charset="utf-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
    <title>左侧定宽，右侧自适应(5)</title>
    <style type="text/css">
        *{margin: 0;padding: 0;}
        .left{
            float: left;
            margin-right: -100%;
            width: 200px;
            border: 1px solid #333;
            background: #aaa;
        }
        .right{
            float: left;
            width: 100%;
        }
        .inner-right{
            margin-left: 200px;
            border: 1px solid #333;
            background: #ccc;
            word-break: break-all;
        }
    </style>
</head>
<body>
<div class="left">
    <h4>left</h4>
    <p>oooooooooooooo
        0000000000000000
        00000000000000000
        ooooooooooooooo
        ooooooooooooooo
        000000000000000</p>
</div>
<div class="right">
    <div class="inner-right">
        <h4>right</h4>
        <p>BBBBBBBBBBBBBBBBBBBBBBBBBBBBB
            888888888888888888888888888888888
            BBBBBBBBBBBBBBBBBBBBBBBBBBBBB
            888888888888888888888888888888888</p>
    </div>
</div>
</body>
</html>